Megan Mullally will be guest judge on this week's 'So You Think You Can Dance'

Image Credit: Kevin Parry/WireImageEmmy-winning actress Megan Mullally (Will & Grace) will be the guest judge on this week’s episodes of Fox’s So You Think You Can Dance (Wed. and Thurs. at 8 p.m. ET/PT), joining permanent judges Nigel Lythgoe (also the show’s exec producer) and Mary Murphy. A longtime fan of the dance competition show – this reporter saw her in the audience of the Season 2 finale – Mullally has also starred in three big Broadway musicals: Grease in 1994 with Rosie O’Donnell, How to Succeed in Business Without Really Trying in 1995 with Matthew Broderick, and Young Frankenstein in 2007 with Roger Bart.

Last year, So You Think You Can Dance featured three permanent judges (Lythgoe, choreographer Mia Michaels, and director Adam Shankman), but this season it is returning to its longstanding format of featuring two permanent judges with a rotating guest judge.